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Citat:
What we know about Z1.EXE:
The filename Z1.EXE was first seen on Nov 17 2007 in CHINA. It has also been seen in the following geographical regions of the Prevx community:
* SPAIN on Jun 2 2008
* The UNITED KINGDOM on Nov 29 2007
The filename Z1.EXE is used by multiple object types including executable programs,objects,objects.
The most common file size is 27,292 bytes. But the following file sizes have also been seen:
* 17,254 bytes
* 848,896 bytes
* 705,024 bytes
The unsafe files using this name are associated with the malware group Lop.Some files using the name Z1.EXE are also associated with the malware group:
* PSW.OnlineGames.AQWG
These files have no vendor, product or version information specified in the file header.
Z1.EXE has been seen to perform the following behavior(s):
* The Process is packed and/or encrypted using a software packing process
* Creation and Registration of a Browser Helper Object in Internet Explorer
* Executes a Process
* Adds a Registry Key (RUN) to auto start Programs on system start up
* This Process Deletes Other Processes From Disk
* This Process Creates Other Processes On Disk
* The Process is polymorphic and can change its structure
Z1.EXE has been the subject of the following behavior(s):
* Executed by Internet Explorer
* Created as a process on disk
* Added as a Registry auto start to load Program on Boot up
* Executed as a Process
* Executed from Temporary Folders
* Has code inserted into its Virtual Memory space by other programs
